USE ANYWHERE – Provides resistance to help develop muscles in hands, arms, wrists, forearms, and fingers for increased strength BETTER PERFORMANCE – A time-tested method for developing your hand grip for improved function and endurance in sports and weight lifting STRONGER GRIP – Great for improving daily function, such as opening and closing jars, or rehabilitation after an injury. DURABLE – Made with top grade, durable aluminum knurled handles and high quality springs for a long-lasting exercise tool 6 STRENGTH LEVELS – Choose from 6 different strength levels, or buy a few so you can easily progress: 100, 150,